Compare two new cars by price, estimated monthly payment, fuel economy, and other specifications. Data comes from the CarPayCheck.com catalog and uses your selected financing terms.
| 4 Series | 5 Series | |
|---|---|---|
| Manufacturer | BMW | BMW |
| Starting price | — | — |
| Monthly payment | — | — |
| Fuel type | Hybrid | Plug-in hybrid |
| Fuel economy | 29.0 mpg | 25.0 mpg |
| CO₂ emissions | 285 g/mi–320 g/mi | 134 g/mi–307 g/mi |
| Annual maintenance cost | — | — |
The most frequently reported issue is electrical system malfunctions, with complaints logged for model years 2019, 2020, 2021, 2022, and 2025. The source does not itemize symptoms, but the category indicates faults in electrical components. Fire-related severity signals were also recorded for several years, making electrical problems a safety-relevant area to inspect.
Powertrain and engine complaints were reported for model years 2019, 2020, 2021, and 2022, with 12 complaints in 2019 and 10 in 2020. The source does not specify symptoms, but the category covers engine and transmission faults. It is recommended to have a specialist inspect for drivability problems, warning lights, fluid leaks, and repair history.
Service brake complaints were logged for model years 2023 and 2024, with 7 complaints in 2023 and 4 in 2024, plus hydraulic brake complaints in 2023. The source does not detail symptoms, but the category indicates brake system faults. Inspecting brake pedal feel, fluid level, lines, and warning messages is advised.
The verified recall is a B58 engine electric coolant pump leak, mainly affecting 2020-2022 540i sedans. Symptoms include coolant warning lights, visible coolant loss, reduced power, overheating, or engine stall while driving, creating a safety risk from loss of drive power. Covered vehicles get the repair free under recall 22V912000; out of warranty, a dealer water pump replacement is typically $800-$1,500.
Owner complaint data for 2019-2021 5 Series models shows recurring oil leaks, coolant smells, and low oil/coolant warnings, especially on B48/B58-engined 530i, 540i, and M550i variants. Look for oil or coolant residue under the car, burning oil odor, and repeated top-ups between service intervals. If ignored, the main consequence is overheating and engine damage. Dealer repairs typically run $600-$1,800 depending on the gasket or coolant pipe source; independent shops may charge $300-$900 less.
Intermittent iDrive freezing, black screens, transient Drivetrain Malfunction warnings, and camera/sensor warnings are documented complaints on 2021-2023 G30 LCI 5 Series models and some 2024 i5 models. The car usually remains drivable, but the electrical glitches may persist and require a control module software update. Out-of-warranty diagnostics and reprogramming often cost about $200-$600, while control module replacement can be $1,200-$2,500.
Some 2021-2023 540i, 530e, and M550i models with 48V mild-hybrid systems show owner complaints of Charging malfunction and Battery malfunction warnings. Symptoms include warning chimes, reduced regenerative braking, and stop/start system shutdown, though the car usually remains drivable. A failed 48V battery or generator repair can cost $1,500-$3,000, plus diagnostic/software work. Under warranty, these repairs are normally covered at no charge.
BMW 4 Series and BMW 5 Series suit different driving needs. The main differences below cover price, monthly payment, fuel economy, and running costs.
The models use different powertrains: 4 Series — Hybrid; 5 Series — Plug-in hybrid. The better choice depends on your daily route and access to charging.
The final choice is about more than numbers: annual distance, city or highway use, and the space your household needs all matter. Use the CarPayCheck.com calculator to apply your financing terms and evaluate both cars in your situation.
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